 <!-- index.html -->
 <!DOCTYPE html>
 <html>
 <head>
   <meta charset="UTF-8">
   <title>test</title>
   <script type="text/javascript">

     var db = openDatabase('mydb','1.0','Test DB',2 * 1024 * 1024);
     var msg;

     db.transaction(function(tx){
       tx.executeSql('INSERT INTO LOGS (id,log) VALUES(1,"test1")');
       tx.executeSql('INSERT INTO LOGS (id,log) VALUES(2,"test2")');
       msg = '<p>数据表已创建,且插入了两条数据。</p>';

       document.querySelector('#status').innerHTML = msg;
     });

     db.transaction(function(tx){
       tx.executeSql('SELECT * FROM LOGS', [], function (tx, results) {
         var len = results.rows.length,i;
         msg = "<p>查询记录条数：" + len + "</p>";

         document.querySelector('#status').innerHTML += msg;

             for(i = 0; i < len; i++){
               msg = "<p><b>" + results.rows.item(i).log + "</b></p>";

         document.querySelector('#status').innerHTML += msg;
         }
       },null);
     });

     </script>
 </head>
 <body>
 <div id="status" name="status">状态信息</div>
 </body>
 </html>